Evaluation of photo-mutagenicity and photo-cytotoxicity of food coloring agents

Sakae Arimoto-Kobayashi, Masaki Machida, Keinosuke Okamoto, Akie Yamaguchi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Pigments extracted from natural products are widely used for food coloration in Japan. An investigation concerning the photo-mutagenicity and photo-carcinogenicity of frequently used colorants in Japan was performed. Colorants examined were from Laccifer lacca (lac-color), Coccus cacti (cochineal-color), Carthamus tinctorius (carthamus yellow), Gardenia augusta (gardenia yellow and gardenia blue), Monascus anka and Monascus purpureus (monascus red), the skin of Vitis vinifera and Vitis labrusca (grape-skin color), Tamarindus indica (tamarind brown) and Beta vulgaris (beet red). No significant increase in bacterial mutation was found when Salmonella typhimurium TA98, TA100 and TA102 were simultaneously treated with colorants and subjected to UVA irradiation for 30 min. When colorant solutions were subjected to UVA irradiation for 4 h, irradiated solutions containing lac-color became slightly mutagenic toward S.typhimurium TA98 without metabolic activation. A decrease in cell survival resulted when WTK-1 cells were subjected to UVA irradiation for 60 min in the presence of purpurin at 1 mg/ml. Delayed cytotoxicity was also observed following 24 h incubation in fresh medium of samples that were subjected to UVA irradiation for 60 min in the presence of colorant (carthamus yellow, grape-skin color, gardenia blue, cochineal-color, monascus red or purpurin).

Original languageEnglish
Pages (from-to)229-233
Number of pages5
JournalMutagenesis
Volume20
Issue number3
DOIs
Publication statusPublished - May 1 2005

ASJC Scopus subject areas

  • Genetics
  • Toxicology
  • Genetics(clinical)
  • Health, Toxicology and Mutagenesis

Fingerprint Dive into the research topics of 'Evaluation of photo-mutagenicity and photo-cytotoxicity of food coloring agents'. Together they form a unique fingerprint.

  • Cite this